3 month old wakes every hour at night

Paulette • 39 weeks Pregnant at 38 y/o after 5 miscarriages

Our 3 month old wakes every hour from 11 pm till 7 am and has been for weeks. She has laryngomalacia so at first I thought that was the issue, she is on meds for reflux because of it. But now I now I am noticing she is very gassy and it wakes her up and she arches her back and cries.

I have tried sitting her up to feed making sure she burps etc but nothing works. Has anyone ever tried gripe water? And if so any good or bad stories?

Thanks